A display apparatus and a control method thereof, wherein output of a backlight is reduced depending on the remaining amount of a battery or a pixel of an input image, and a brightness value of an output image is increased to compensate for the reduced output of the backlight. A display apparatus according to the present invention includes a display controller for controlling brightness of an image displayed on a display panel and output of a backlight of the display panel; and a control unit for detecting the remaining amount of a battery and controlling the display controller in accordance with the remaining amount of the battery. The control unit includes an operation unit for calculating an output value of the backlight and a pixel brightness correction value of the output image.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The display apparatus as claimed in claim 1 , wherein the control unit is configured to determine the output value of the backlight in proportion to the remaining amount of the battery, to determine the brightness limit value in inverse proportion to the output value of the backlight, and to determine the pixel brightness correction value in proportion to the brightness limit value.
3. The display apparatus as claimed in claim 1 , further comprising: a storage unit configured to store a brightness upper limit value and the output value of the backlight in accordance with the remaining amount of the battery, wherein the operation unit is configured to calculate the brightness upper limit value and the output value of the backlight by reading a lookup table stored in the storage unit.
5. The method as claimed in claim 4 , wherein steps (A) to (E) are performed only when the remaining amount of the battery is below a predetermined value.
6. The method as claimed in claim 4 , wherein in steps (B) and (C), the output value of the backlight and the pixel brightness limit value are read and calculated from a lookup table.
7. The method as claimed in claim 4 , wherein in step (D), the pixel brightness correction value is read and calculated from a lookup table.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
September 17, 2008
February 5, 2013
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